I have over 200+ WP blogs, and have been in constant contact with the plug in creator Markus, who I might add has been EXCELLENT in feedback and assisting me when I have issues.
He emailed me to let me know he has updated the plugin and I LOVE the update. I can now delete all found duplicates with a single click. It moves the duplicate posts to the trash for me to review and ensure they are indeed a duplicate.
Currently I would recommend this plug in if you are looking to remove duplicate posts to ensure your not targeted by Panda.
Great Job Markus, keep the updates coming.